León, J., & Collahua, Y. (2015). Technical note 33: The reliability and validity of achievement tests in the second Young Lives school survey in Ethiopia. Young Lives.
Citace podle Chicago (17th ed.)León, J., a Y. Collahua. Technical Note 33: The Reliability and Validity of Achievement Tests in the Second Young Lives School Survey in Ethiopia. Young Lives, 2015.
Citace podle MLA (9th ed.)León, J., a Y. Collahua. Technical Note 33: The Reliability and Validity of Achievement Tests in the Second Young Lives School Survey in Ethiopia. Young Lives, 2015.
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